Update blueprint/usb_install_and_upgrade
Originally created by @BitingBird on #6971 (Redmine)
https://tails.boum.org/blueprint/usb_install_and_upgrade/ lists outdated issues (see #5820 (closed)).
If this page is kept as reference, the link to Redmine should be changed to https://labs.riseup.net/code/projects/tails/issues?query_id=120
Edited by BitingBird